Features Over-ear soft earmuffs - Comfortable to wear Adjustable headset band : It is made of lightweight materials. And the length of headset band can be adjusted Over-ear soft earmuffs : At the same time,it is equipped with over-ear soft earmuffs, which are skin-friendly and comfortable without pressing the ears. Dynamic unit - Powerful bass The headset is equipped with high-quality 40mm dynamic unit. And it carries with high resolution and balanced sound frequency. The headset presents powerful bass, clear vocals and instrument'sound Stable wireless transmission It uses upgraded Bluetooth 5.1 chip to ensure high-definition signal transmission, which is stable and smooth like wired transmission 22 hours battery life The headset uses low power consumption Bluetooth chip and high-performance battery. And the battery life is up to 22 hours, which can meet the needs of all-day use. Foldable design - Easier to carry Foldable design is easy to store and carry. Audio cable connection It works even when it's out of power. The accessory includes an audio cable. The headset can continue to be used by connecting the audio cable when the headset is out of power Specifications Bluetooth version:V5.1 Play time: 22H(70% Vol.) Talk time: 21H Wireless working range: 10M (without obstacles) Speaker: Ф40mm Charging time: 2.5H Input voltage/current:DC 5V/1A Headset battery: 350mAh Headset dimensions: 170*195*76mm Net weight: 185g